Search results for " Time"
showing 10 items of 3005 documents
Functions of adolescent drinking in Finland and the Soviet Union
1987
The present study was conducted in Finland and the USSR (Estonia) with two birth cohorts (14 and 17 years old) and their parents. The subjects, 504 in Finland and 329 in Estonia, were drawn from urban and rural areas. 85% of the Estonian and 55% of the Finnish parents returned the questionnaire. The results supported the hypothesis that adolescent drinking is an age-related behaviour aimed at active coping efforts to adopt adult-like behaviour. In both countries abstinence decreased with age, and the use of alcohol was seen as behaviour which became acceptable at an older age than the age when the actual initiation occurred. However, the use of alcohol remained occasional through the ages o…
Work, Time and Family: Is It Possible to Identify European Family Working Time Regimes?
2018
Overall in Europe, over the past decades there has been a shift from the male-breadwinner to the dual-earner model, but with a varying pace, and it has even been claimed that the rise of the dual earning households is one of the most significant social trends that has impacted European societies. In order to capture more carefully the variation of the family working time patterns, research has clustered European countries into family working time regimes or clusters. As men’s position in the labour market has been more stable over time, the change in women’s position in the labour markets is the core of explaining the changing family work patterns. Research has shown that family working tim…
Modulation of excitatory and inhibitory circuits for visual awareness in the human right parietal cortex.
2005
The balance of specific patterns of excitation and inhibition in critical regions of both hemispheres could be relevant in orienting attention over the extrapersonal space. In the present study a group of normal subjects had to detect small rectangular stimuli presented briefly on a computer screen in three different conditions: unilateral presentation either to left or right visual periphery or bilateral simultaneous presentation. Paired transcranial magnetic stimulation (TMS), was applied over the right parietal cortex 150 ms after the presentation of the visual stimuli with different inter-stimulus intervals (ISIs: 1, 3,5 and 10 ms). When paired TMS was applied 150 ms, but not 100 ms, af…
A family based tailored counselling to increase non-exercise physical activity in adults with a sedentary job and physical activity in their young ch…
2011
Abstract Background Epidemiological evidence suggests that decrease in sedentary behaviour is beneficial for health. This family based randomized controlled trial examines whether face-to-face delivered counselling is effective in reducing sedentary time and improving health in adults and increasing moderate-to-vigorous activities in children. Methods The families are randomized after balancing socioeconomic and environmental factors in the Jyväskylä region, Finland. Inclusion criteria are: healthy men and women with children 3-8 years old, and having an occupation where they self-reportedly sit more than 50% of their work time and children in all-day day-care in kindergarten or in the firs…
Effect of Six-Month Diet Intervention on Sleep among Overweight and Obese Men with Chronic Insomnia Symptoms : A Randomized Controlled Trial
2016
Growing evidence suggests that diet alteration affects sleep, but this has not yet been studied in adults with insomnia symptoms. We aimed to determine the effect of a six-month diet intervention on sleep among overweight and obese (Body mass index, BMI >= 25 kg/m(2)) men with chronic insomnia symptoms. Forty-nine men aged 30-65 years with chronic insomnia symptoms were randomized into diet (n = 28) or control (n = 21) groups. The diet group underwent a six-month individualized diet intervention with three face-to-face counseling sessions and online supervision 1-3 times per week; 300-500 kcal/day less energy intake and optimized nutrient composition were recommended. Controls were instruct…
Discrete Time Versus Continuous Time Approach to the Autoimmune Response
1989
A discrete time model for the immune regulation recently proposed by Weisbuch and Atlan is extended to continuous coupling coefficients as well as to continuous concentration rates in continuous time. It is shown that depending on the choice of the network parameters typical immune responses can be observed.
HP-Xe to go: Storage and Transportation of Hyperpolarized 129-Xe
2016
Abstract Recently the spin–lattice relaxation time T 1 of hyperpolarized (HP)- 129 Xe was significantly improved by using uncoated and Rb-free storage vessels of GE180 glass. For these cells, a simple procedure was established to obtain reproducible wall relaxation times of about 18 h. Then the limiting relaxation mechanism in pure Xe is due to the coupling between the nuclear spins and the angular momentum of the Xe–Xe van-der-Waals-molecules. This mechanism can be significantly reduced by using different buffer gases of which CO 2 was discovered to be the most efficient so far. From these values, it was estimated that for a 1:1 mixture of HP-Xe with CO 2 a longitudinal relaxation time of …
Reliability Estimation of Optimal Viscoelastic Composite Shells in Critical-Time Calculations
2003
The problem of reliability estimation for optimal viscoelastic composite shells in critical-time calculations is considered. The weight minimization of a viscoelastic composite shell, with constraints on deflections at the critical time, leads to a system deforming unstably, whose deflections grow in time with an increasing rate. A method for estimating the reliability of such shells in calculating the critical time is discussed. This time is regarded as a random variable depending on many, roughly equivalent, factors. An analysis of the reliability is carried out for different values of coefficients of variation, occurring in practice.
Numerical Study of the semiclassical limit of the Davey-Stewartson II equations
2014
We present the first detailed numerical study of the semiclassical limit of the Davey–Stewartson II equations both for the focusing and the defocusing variant. We concentrate on rapidly decreasing initial data with a single hump. The formal limit of these equations for vanishing semiclassical parameter , the semiclassical equations, is numerically integrated up to the formation of a shock. The use of parallelized algorithms allows one to determine the critical time tc and the critical solution for these 2 + 1-dimensional shocks. It is shown that the solutions generically break in isolated points similarly to the case of the 1 + 1-dimensional cubic nonlinear Schrodinger equation, i.e., cubic…
Permanenze e innovazioni nell'architettura del MediterraneoMediterranean Architecture between Heritage and Innovation
2011
Il volume offre numerosi spunti sul tema Permanenze e innovazioni nell'architettura del Mediterraneo, dimostrandone l'ampiezza di aspetti riconducibili alla Tecnologia dell'architettura, di cui si evidenzia la flessibilita dei confini disciplinari con riferimento ai diversi significati assumibili dal concetto di risorsa. Letta in continuita con le precedenti pubblicazioni Osdotta, questa consente di seguire quanto si va sviluppando nel terzo livello di formazione in un momento particolarmente critico per l'istituzione universitaria, continuando a porre l'accento sul nodo domanda/offerta di ricerca, nel confronto con altre istituzioni e con il mondo della produzione di settore, nell'attuale …